Solve the problem.A mountain's peak is 18,900 feet above sea level. Write this height in scientific notation.
A. 1.89 × 105 ft
B. 1.89 × 106 ft
C. 1.89 × 104 ft
D. 1.89 × 10-5 ft
Answer: C
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Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = x2 - 2x + 7
A. Concave down for x < 1, concave up for x > 1, point of inflection at (1, 6) B. Concave up for all x, no points of inflection C. Concave down for all x, no points of inflection D. Concave up for x < 1, concave down for x > 1, point of inflection at (1, 6)
Complete the table for the equation.y + x = 17
A. 
B. 
C. 
D. 
Provide an appropriate response.Evaluate: C40, 37
Fill in the blank(s) with the appropriate word(s).
Multiply and simplify.(sin x - cos x)(sec x + csc x)
A. tan x - cot x B. cos x - cot x C. cot x + csc x D. tan x - sin x